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drm/radeon: use 0-255 rather than 0-100 for pwm fan range 

0-255 seems to be the preferred range for the pwm interface.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2015-02-04 17:18:55 -05:00
parent 85840c76d8
commit 082452e125
1 changed files with 6 additions and 2 deletions
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8
drivers/gpu/drm/radeon/radeon_pm.c
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@ -585,7 +585,7 @@ static ssize_t radeon_hwmon_set_pwm1_enable(struct device *dev,
if (err)
return err;
switch(value) {
switch (value) {
case 1: /* manual, percent-based */
rdev->asic->dpm.fan_ctrl_set_mode(rdev, FDO_PWM_MODE_STATIC);
break;
@ -608,7 +608,7 @@ static ssize_t radeon_hwmon_get_pwm1_max(struct device *dev,
struct device_attribute *attr,
char *buf)
{
return sprintf(buf, "%i\n", 100); /* pwm uses percent-based fan-control */
return sprintf(buf, "%i\n", 255);
}
static ssize_t radeon_hwmon_set_pwm1(struct device *dev,
@ -623,6 +623,8 @@ static ssize_t radeon_hwmon_set_pwm1(struct device *dev,
if (err)
return err;
value = (value * 100) / 255;
err = rdev->asic->dpm.set_fan_speed_percent(rdev, value);
if (err)
return err;
@ -642,6 +644,8 @@ static ssize_t radeon_hwmon_get_pwm1(struct device *dev,
if (err)
return err;
speed = (speed * 255) / 100;
return sprintf(buf, "%i\n", speed);
}